Bar stool



FIG. 1 is a front view of the present invention;

FIG. 2 is a left hand side view of the present invention;

FIG. 3 is a back view of the present invention;

FIG. 4 is a top view of the present invention; and,

FIG. 5 is a bottom view of the present invention. 

The ornamental design for a bar stool, as shown and described. 